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How do you delete an ActiveRecord object?
...ld_age = 20
User.where(age: threshold_age).delete_all
https://www.rubydoc.info/docs/rails/ActiveRecord%2FNullRelation:delete_all
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How to print to stderr in Python?
...on3-ready... it also forces you to do it NOW, just to print some debugging info to the stderr... which I would find more of a hassle in most situations when I'm trying to debug something. (I'd rather not introduce new syntax errors!) :-)
– Dan H
Nov 20 '14 at...
iPhone Debugging: How to resolve 'failed to get the task for process'?
...n many cases (e.g., distribution through the App Store.) See here for more information on the cases when Entitlements.plist is required:
IMPORTANT: An Entitlements file is generally only needed when building for Ad Hoc Distribution or enabling Keychain data sharing. If neither of these is true, ...
JSON.parse vs. eval()
... lets you specify how to deal with certain values, such as datetimes (more info and example in the inline documentation here)
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Where does npm install packages?
... "npm root -g" is correct - list might work but is far too much info, where as the other command just gives you the exact location you are looking for. stackoverflow.com/a/24295332/174965
– Adam Tolley
Feb 13 '17 at 15:36
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How to create own dynamic type or dynamic object in C#?
...;
MyDynamic.Increment = (Action)(() => { MyDynamic.number++; });
More Info can be found at
ExpandoObject MSDN
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How do you find out the caller function in JavaScript?
...ind any real improvement by doing that.
Not all browsers give you the same information. That is, parameters, code column, etc.
Caller Function Name
By the way, if you only want the name of the caller function (in most browsers, but not IE) you can use:
arguments.callee.caller.name
But note t...
What is Activity.finish() method doing exactly?
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This is exactly the info I needed, since I have an activity which only connects to google drive, then it does its checks and it moves on to the main activity (or to the Settings activity if there is an error), so the user shouldn't be able to go...
how to generate migration to make references polymorphic
...u should see the actual fields that Rails uses (the Rails Guides have more info).
– Michelle Tilley
Apr 4 '11 at 15:44
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Ternary Operator Similar To ?:
...la return a value, you can use this
val a = if (1 < 0) 1 else 2
More info: https://alvinalexander.com/scala/scala-if-then-ternary-operator-cookbook-examples
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